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Veteran Harlem Rep. Charles Rangel is going to seek re-election to a 23rd term to Congress next year, The Post has learned.

Rangel, 83, is expected to make an announcement “sooner rather than later,” said Manhattan Democratic Chairman and Harlem Assemblyman Keith Wright.

“Congressman Rangel is running. You can’t keep the old war horse down,” said Wright, adding, “I’m with him all the way.”

Despite being censured for ethics violations in 2010, Rangel won the Democratic primary in a squeaker in 2012, beating back a strong challenge from state Sen. Adriano Espaillat.

The new 13th Congressional District is majority Latino. The Dominican-born Espaillat is expected to run again, and would likely be Rangel’s strongest foe.

But Wright deadpanned, “Espaillat who? I’ve never heard of him.”

Rangel is also facing potential challenges in his central Harlem base. The Rev. Michael Walrond, of the First Corinthian Baptist Church, who has close ties to Al Sharpton, and the Rev. Calvin Butts, of the Abyssinian Baptist Church, have expressed an interest in running.